Henry p



Ovens, Domestic, Portable.

T mg

(No Model.)

H. P. BARTLETT.

OVEN.

No. 343,562. Patented June 15, 1886 cm I 6 ca.

PETERS. Phatrrlnhagnpher. Wlmiwm EC HENRY F. BARTLETT, or SBRINGFIELD,MIssouRI, ASSIGNOR OF one .THIRD TO JOHN B. CARSON AND S. A. AND S. 0.

PLACE.

HASELTINE, OF SAME OVEN.

- Application filed J une 3. 1885 Serial No. 167,526. (No model.)

, To all whom it may concern.-

Be it known that I, HENRY F. BARTLETT, a citizen of the United States,residing at Spring field, in the county of Greene and State of Missouri,have invented certain new and useful Improvements in Ovens; and I dohereby declare the following to be a full, clear, and exact descriptionof the invention, such as will enable others skilledin the art to whichit appertains to make and use the'same.

My .invention relates to improvements in ovens, the object of which isto provide a cheap, simple, ing heat and for quickly and thoroughlybaking by producing a double current of hot air over the top of thethings to be baked. These objects I attain by means of the deviceillustrated in the accompanying drawings, forming a part of thisspecification. in which- Figure 1 is a view in elevation of the devicewith the door open. Fig. 2 is a vertical cross-section on the line w a:a: of Fig. 1, looking toward the back of the oven. Fig. 3 is a verticallongitudinal section of the device on the line 3/ y y of Fig. 1. Fig.4is a detail view of the upper casing for the burner; Fig. 5, a

' view ofthe lower casing. Fig. 6 is a view of the casing and gratedetached.

The oven has double walls throughout, the

0 space between them being flues in which the hot air circulates, asindicated by the arrows.

This oven is intended to be used with oil, gasoline, and gas heaters.

Similar letters of reference indicate corresponding parts in the severalfigures.

A is a door, preferably made hollow, with the walls a a, and providedwith suitable hinges and latch to prevent the escape of heat.

Bis a sleeve or casing surrounding the burn- 40 er and entering the fluebetween the walls G O, by means of holes 0 in the lower wall, 0. Thelower edge of said casing, for use on the ordinary grating of thegasoline, &c., stoves, may be provided with slots or notches 1) I), &c.,

5 and projecting pieces I) b, &c., to receive the bars and close theopenings between them.

His an extension of the casing B, which extends below the blaze anydesired distance to create a draft. For this purpose it is prefandconvenient device for sav erably provided with a bottom, h, hole, h", atthe lower end. The upper end may. be secured to the upper casing in anydesired way,or to the grating K. For this latter purpose the upper endof this lower casing is preferably provided with slots 71.71 &c., toreceive the grate-bars K, and projections 71. h, &c., to extend upbetween them. These projections are cut or slit, h h, &c., leaving thesmall pieces or strips 7:. h", &c., which may be bent over the ring orrim of the grate, the casing firmly in place. This feature ofconstruction forms the subject of my application No. 180,723, and is nothere claimed.

F F F F are the outer and inner side walls of the oven. Between thesewalls are fluesf f", having a connection with the lower flue, c and anopening, f f, into the oven at or near its top.

D D are the back walls. Between them is a line opening at or near thebottom of the oven, whence the heat must escape that enters the oven atf f, passing down over the contents of the oven. It passes up, throughflue d" into the flue e", which is formed by the two upper walls, E E,and is permitted to escape through perforations E E, &c., which are madesmall, so as to retain theheat as long as possible over the oven. Thusthe heatingcurrent passing over the inner wall or casing of the ovenafter leaving the baking-chamber keeps the same heated to a high degree.In consequence the heating-current as it enters the baking chamber losesno perceptible amount of heat by radiation, and it descends uponthearticles to be cooked in a condition to do its work quickly and evenly.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is:-

1. The combination, with walls 0 G, having a flue, c of walls F F F F,having flues f 2 and openings ff, wallsD D, having an opening, d, andflue d walls E E, having a flue, e", and perforations E E, 8tc., and adoor, A, substantially as shown and described.

2. An oven having an outer and an inner casing, with flues between thetwo at the top, bottom, sides, and one end thereof, the bothaving a 50 IQ to hold 60.

tom of the outer casing being provided with heating-current,substantially as shown and I0 an opening for the admission of theheatingdescribed.

ch -rent, the flues at the sides communicating In testimony whereof Iaffix my signature in with the bottom fine and opening into theinpresence of two witnesses. terior casing at the top, the end fluecommnnicating with the top flue, the end flue open- HENRY BARTLETT inginto the inner easing at or neanthe bottom Witnesses-z of the same, andthe outer casing beingproj N; A.'HASELTINE, vided with openings for thedischarge of the W. R. JONES.

